diff options
| -rw-r--r-- | drivers/cpuidle/driver.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c index 1c295a93d582..370664c47e65 100644 --- a/drivers/cpuidle/driver.c +++ b/drivers/cpuidle/driver.c @@ -8,6 +8,8 @@ * This code is licenced under the GPL. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/mutex.h> #include <linux/module.h> #include <linux/sched.h> @@ -152,7 +154,7 @@ static void cpuidle_setup_broadcast_timer(void *arg) * __cpuidle_driver_init - initialize the driver's internal data * @drv: a valid pointer to a struct cpuidle_driver */ -static int __cpuidle_driver_init(struct cpuidle_driver *drv) +static void __cpuidle_driver_init(struct cpuidle_driver *drv) { int i; @@ -195,15 +197,13 @@ static int __cpuidle_driver_init(struct cpuidle_driver *drv) s->exit_latency = div_u64(s->exit_latency_ns, NSEC_PER_USEC); /* - * Ensure that the exit latency of a CPU idle state does not - * exceed its target residency which is assumed in cpuidle in - * multiple places. + * Warn if the exit latency of a CPU idle state exceeds its + * target residency which is assumed to never happen in cpuidle + * in multiple places. */ if (s->exit_latency_ns > s->target_residency_ns) - return -EINVAL; + pr_warn("Idle state %d target residency too low\n", i); } - - return 0; } /** @@ -233,9 +233,7 @@ static int __cpuidle_register_driver(struct cpuidle_driver *drv) if (cpuidle_disabled()) return -ENODEV; - ret = __cpuidle_driver_init(drv); - if (ret) - return ret; + __cpuidle_driver_init(drv); ret = __cpuidle_set_driver(drv); if (ret) |